Flask-signing

**Full Changelog**: https://github.com/signebedi/Flask-Signing/compare/0.4.0...0.4.1

Modify the data model to link keys to their previous_keys after rotation. (https://github.com/signebedi/Flask-Signing/issues/27) Add support for safe_mode, which prevents rotation of already-deactivated and already-rotated keys. (https://github.com/signebedi/Flask-Signing/issues/28)

**Full Changelog**: https://github.com/signebedi/Flask-Signing/compare/0.3.2...0.4.0

Added support for key rotation. (13)

**Full Changelog**: https://github.com/signebedi/Flask-Signing/compare/0.3.1...0.3.2

More docs changes.

**Full Changelog**: https://github.com/signebedi/Flask-Signing/compare/0.3.0...0.3.1

Docs fix.

**Full Changelog**: https://github.com/signebedi/Flask-Signing/compare/0.2.1...0.3.0

In this release, we added support for passing multiple scopes to a given signature (16).

**Full Changelog**: https://github.com/signebedi/Flask-Signing/compare/0.2.0...0.2.1

Primarily focused on documentation fixes.